john hamman in "jurassic park." where dna experiments went tragically awry. >> don't you see the danger inherent in what you're doing here? genetic power is the most awesome force the planet's ever seen. >> reporter: he assures us nothing can go wrong with this fish, altered by science to grow and get to market faster. >> this fish is identical in every measurable way. >> reporter: have we gone too far? >> i wouldn't want to eat this fish, unless it's gone through a proper approval process. >> reporter: critics say the fda scientists didn't do enough independent work and used company data to come to its safety conclusions. some of which tested only six fish. >> that kind of science wouldn't make it past a high school science fair. >> reporter: is this something i should be afraid of? >> you eat dna every time you swallow. you consume dna with every food you eat. >> reporter: altered dna? >> the gene comes from the chinook salmon. pacific salmon. that protein is identical to the same protein that's produced by the at